11686857 has 48 divisors (see below), whose sum is σ = 20027520. Its totient is φ = 5930496.

The previous prime is 11686849. The next prime is 11686859. The reversal of 11686857 is 75868611.

11686857 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11686857 - 2³ = 11686849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11686859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131269 + ... + 131357.

It is an arithmetic number, because the mean of its divisors is an integer number (417240).

Almost surely, 2^11686857 is an apocalyptic number.

It is an amenable number.

11686857 is a deficient number, since it is larger than the sum of its proper divisors (8340663).

11686857 is a wasteful number, since it uses less digits than its factorization.

11686857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 149 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 11686857 is about 3418.6045398671. The cubic root of 11686857 is about 226.9338302611.

The spelling of 11686857 in words is "eleven million, six hundred eighty-six thousand, eight hundred fifty-seven".